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Effect of dopants on the performance of CuO–CeO2 catalysts in methanol steam reforming

Paper ID Volume ID Publish Year Pages File Format Full-Text
48622 46515 2007 9 PDF Available
Title
Effect of dopants on the performance of CuO–CeO2 catalysts in methanol steam reforming
Abstract

Steam reforming of methanol was carried out over a series of doped CuO–CeO2 catalysts prepared via the urea–nitrate combustion method. XRD analysis showed that at least part of the dopant cations enter the ceria lattice. The addition of various metal oxide dopants in the catalyst composition affected in a different way the catalytic performance towards H2 production. Small amounts of oxides of Sm and Zn improved the performance of CuO–CeO2, while further addition of these oxides caused a decrease in catalyst activity. XPS analysis of Zn- and Sm-doped catalysts showed that increase of dopant loading leads to surface segregation of the dopant and decrease of copper oxide dispersion. The addition of oxides of La, Zr, Mg, Gd, Y or Ca lowered or had no effect on catalytic activity, but led to less CO in the reaction products. Noble-metal modified catalysts had slightly higher activity, but the CO selectivity was also significantly higher.

Keywords
Copper oxide; Cerium oxide; Hydrogen production; Methanol; Steam reforming; Combustion method
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Effect of dopants on the performance of CuO–CeO2 catalysts in methanol steam reforming
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 69, Issues 3–4, 15 January 2007, Pages 226–234
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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